G.f. satisfies: A(x) = x/(1 - A(A(A(x)))).

A140094

G.f. satisfies: A(x) = x/(1 - A(A(A(x)))).

Terms

    a(0) =1a(1) =1a(2) =4a(3) =25a(4) =199a(5) =1855a(6) =19387a(7) =221407a(8) =2717782a(9) =35455981a(10) =487672243a(11) =7029980797a(12) =105732907498

External references